Specialized instrumentation providers can extend this class to get basic
provider state and capabilities. It implements Configurable so it can
be used within the configuration framework to participate in automatic
configuration.

setInstrument

Used to associate one or more instruments to a provider. Instruments
are specified by class name or alias. Multiple instruments must be
specified as a comma separated list.
example: DataCache,QueryCache,com.my.MyInstrument
where DataCache and QueryCache have aliases and com.my.MyInstrument is
a class implementing an Instrument.

setStarted

getInstrumentAliases

Returns an string array of identifier to class name aliases for
instruments known to the instrumentation provider. Example:
{"DataCache", "org.apache.openjpa.instrumentation.DataCacheInstrument",
"QueryCache", "org.apache.openjpa.instrumentation.QueryCacheInstrument"}